GRAPEVINE: I-5 is now CLOSED in both directions due to inclement weather. Closure on Southbound I-5 at Grapevine Road, northbound closure near State Route 138. No ETO at this time. pic.twitter.com/tv5XPt5FGJ

Around 4 p.m. Sunday, snow began sticking to the ground and CHP paced the area.

Caltrans officials say they do not have an estimated time for reopening.

"The Grapevine is closed due to dangerous conditions. Caltrans is working hard to make it safe. We will open it as soon as possible," California Highway Patrol Grapevine Tejon wrote on social media.

Due to the winter weather, I-5 through Tejon Pass, between Santa Clarita and Bakersfield, has been closed for an unknown duration. Generally, the primary alternate route in this situation are SR-126 to US-101 to SR-166 to I-5, or SR-14 to SR-58 to SR-99. #CAwxhttps://t.co/myhOeOHFfE